| Commit message (Collapse) | Author | Age | Files | Lines |
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Merge support for the Platform Firmware Runtime Update and Telemetry
interface based on ACPI.
The interface provided here allows updating certain pieces of the
platform firmware without restarting the system and collecting
platform firmware telemetry data.
This also includes a utility for accesing the new interface from user
space.
* acpi-pfrut:
ACPI: pfr_telemetry: Fix info leak in pfrt_log_ioctl()
ACPI: pfr_update: Fix return value check in pfru_write()
ACPI: tools: Introduce utility for firmware updates/telemetry
ACPI: Introduce Platform Firmware Runtime Telemetry driver
ACPI: Introduce Platform Firmware Runtime Update device driver
efi: Introduce EFI_FIRMWARE_MANAGEMENT_CAPSULE_HEADER and corresponding structures
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Introduce the pfr_update driver which can be used for Platform Firmware
Runtime code injection and driver update [1].
The user is expected to provide the EFI capsule, and pass it to the
driver by writing the capsule to a device special file. The capsule
is transferred by the driver to the platform firmware with the help
of an ACPI _DSM method under the special ACPI Platform Firmware
Runtime Update device (INTC1080), and the actual firmware update is
carried out by the low-level Management Mode code in the platform
firmware.
This change allows certain pieces of the platform firmware to be
updated on the fly while the system is running (runtime) without the
need to restart it, which is key in the cases when the system needs to
be available 100% of the time and it cannot afford the downtime related
to restarting it, or when the work carried out by the system is
particularly important, so it cannot be interrupted, and it is not
practical to wait until it is complete.
Link: https://uefi.org/sites/default/files/resources/Intel_MM_OS_Interface_Spec_Rev100.pdf # [1]
Tested-by: Hongyu Ning <hongyu.ning@intel.com>
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Without timeout reports, it is impossible to decode many protocols since
it is not known when the transmission ends. timeout reports are sent by
default, but can be turned off. There is no reason to turn them off, and
I cannot find any software which does this, so we can safely remove it.
This makes the ioctl LIRC_SET_REC_TIMEOUT_REPORTS a no-op.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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The beginning part of the "existing HSV/HSL formats" table (line 7742)
reads:
.. raw:: latex
\begingroup
\tiny
\setlength{\tabcolsep}{2pt}
However, the ending part (line 7834) reads:
.. raw:: latex
\normalsize
Fix the imbalance by replacing the \normalsize with \endgroup.
Note:
Actually, the imbalance is harmless and just results in an
informative message near the bottom of userspace-api.log:
(\end occurred inside a group at level 1)
### semi simple group (level 1) entered at line 70696 (\begingroup)
### bottom level
Link: https://lore.kernel.org/linux-media/b3eeec4d-1a34-0a1a-3097-1ddea3b5f1c8@gmail.com
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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V4L2_PIX_FMT_HM12 was redefined to V4L2_PIX_FMT_NV12_16L16, so use the
new name in libv4l-introduction.rst.
This fixes this warning:
libv4l-introduction.rst:27: WARNING: undefined label: v4l2-pix-fmt-hm12
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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CAPTURE buffers might be read by the hardware after they are dequeued,
which goes against the general idea that userspace has full control over
dequeued buffers. Explain why and document the restrictions that this
implies for userspace.
Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
Acked-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Add the VP9 stateless decoder controls plus the documentation that goes
with it.
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Co-developed-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com>
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Co-developed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Improve the documentation for CEC_RECEIVE/TRANSMIT w.r.t. the
sequence and tx/rx_status fields.
Also remove a duplicate tx_status description.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Fix example code which has missing or double backslash typo.
Signed-off-by: Kwang Son <dev.kwang.son@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Add V4L2_COLORFX_SET_RGB color effects control, V4L2_CID_COLORFX_RGB
for RGB color setting.
with two mirror changes:
- change 0xFFFFFF to 0xffffff
- fix comments 2^24 to 2^24 - 1
[hverkuil: dropped spaces around + with V4L2_CID_BASE for consistency]
Signed-off-by: Dillon Min <dillon.minfei@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH:
"Here is the big set of char and misc and other tiny driver subsystem
updates for 5.16-rc1.
Loads of things in here, all of which have been in linux-next for a
while with no reported problems (except for one called out below.)
Included are:
- habanana labs driver updates, including dma_buf usage, reviewed and
acked by the dma_buf maintainers
- iio driver update (going through this tree not staging as they
really do not belong going through that tree anymore)
- counter driver updates
- hwmon driver updates that the counter drivers needed, acked by the
hwmon maintainer
- xillybus driver updates
- binder driver updates
- extcon driver updates
- dma_buf module namespaces added (will cause a build error in arm64
for allmodconfig, but that change is on its way through the drm
tree)
- lkdtm driver updates
- pvpanic driver updates
- phy driver updates
- virt acrn and nitr_enclaves driver updates
- smaller char and misc driver updates"
* tag 'char-misc-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (386 commits)
comedi: dt9812: fix DMA buffers on stack
comedi: ni_usb6501: fix NULL-deref in command paths
arm64: errata: Enable TRBE workaround for write to out-of-range address
arm64: errata: Enable workaround for TRBE overwrite in FILL mode
coresight: trbe: Work around write to out of range
coresight: trbe: Make sure we have enough space
coresight: trbe: Add a helper to determine the minimum buffer size
coresight: trbe: Workaround TRBE errata overwrite in FILL mode
coresight: trbe: Add infrastructure for Errata handling
coresight: trbe: Allow driver to choose a different alignment
coresight: trbe: Decouple buffer base from the hardware base
coresight: trbe: Add a helper to pad a given buffer area
coresight: trbe: Add a helper to calculate the trace generated
coresight: trbe: Defer the probe on offline CPUs
coresight: trbe: Fix incorrect access of the sink specific data
coresight: etm4x: Add ETM PID for Kryo-5XX
coresight: trbe: Prohibit trace before disabling TRBE
coresight: trbe: End the AUX handle on truncation
coresight: trbe: Do not truncate buffer on IRQ
coresight: trbe: Fix handling of spurious interrupts
...
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https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next
Jonathan writes:
First set of counter subsystem new feature support for the 5.16 cycle
Most interesting element this time is the new chrdev based interface
for the counter subsystem. Affects all drivers. Some minor precursor
patches.
Major parts:
* Bring all the sysfs attribute setup into the counter core rather than
leaving it to individual drivers. Docs updates accompany these changes.
* Move various definitions to a uapi header as now needed from userspace.
* Add the chardev interface + extensive documentation and example tool
* Add new ABI needed to identify indexes needed for chrdev interface
* Implement new interface for the 104-quad-8
* Follow up deals with wrong path for documentation build
* Various trivial cleanups and missing feature additions related to this
series
* tag 'counter-for-5.16a-take2' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio:
docs: counter: Include counter-chrdev kernel-doc to generic-counter.rst
counter: fix docum. build problems after filename change
counter: microchip-tcb-capture: Tidy up a false kernel-doc /** marking.
counter: 104-quad-8: Add IRQ support for the ACCES 104-QUAD-8
counter: 104-quad-8: Replace mutex with spinlock
counter: Implement events_queue_size sysfs attribute
counter: Implement *_component_id sysfs attributes
counter: Implement signalZ_action_component_id sysfs attribute
tools/counter: Create Counter tools
docs: counter: Document character device interface
counter: Add character device interface
counter: Move counter enums to uapi header
docs: counter: Update to reflect sysfs internalization
counter: Update counter.h comments to reflect sysfs internalization
counter: Internalize sysfs interface code
counter: stm32-timer-cnt: Provide defines for slave mode selection
counter: stm32-lptimer-cnt: Provide defines for clock polarities
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This patch adds high-level documentation about the Counter subsystem
character device interface.
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Link: https://lore.kernel.org/r/7a71dff2868195901d074ae2ec1b5611838d4b24.1632884256.git.vilhelm.gray@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- New driver for SK Hynix Hi-846 8M pixel camera
- New driver for the ov13b10 camera
- New driver for Renesas R-Car ISP
- mtk-vcodec gained support for version 2 of decoder firmware ABI
- The legacy sir_ir driver got removed
- videobuf2: the vb2_mem_ops kAPI had some improvements
- lots of cleanups, fixes and new features at device drivers
* tag 'media/v5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (328 commits)
media: venus: core: Add sdm660 DT compatible and resource struct
media: dt-bindings: media: venus: Add sdm660 dt schema
media: venus: vdec: decoded picture buffer handling during reconfig sequence
media: venus: Handle fatal errors during encoding and decoding
media: venus: helpers: Add helper to mark fatal vb2 error
media: venus: hfi: Check for sys error on session hfi functions
media: venus: Make sys_error flag an atomic bitops
media: venus: venc: Use pmruntime autosuspend
media: allegro: write vui parameters for HEVC
media: allegro: nal-hevc: implement generator for vui
media: allegro: write correct colorspace into SPS
media: allegro: extract nal value lookup functions to header
media: allegro: correctly scale the bit rate in SPS
media: allegro: remove external QP table
media: allegro: fix row and column in response message
media: allegro: add control to disable encoder buffer
media: allegro: add encoder buffer support
media: allegro: add pm_runtime support
media: allegro: lookup VCU settings
media: allegro: fix module removal if initialization failed
...
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This patch lets user-space request a non-coherent memory
allocation during CREATE_BUFS and REQBUFS ioctl calls.
= CREATE_BUFS
struct v4l2_create_buffers has seven 4-byte reserved areas,
so reserved[0] is renamed to ->flags. The struct, thus, now
has six reserved 4-byte regions.
= CREATE_BUFS32
struct v4l2_create_buffers32 has seven 4-byte reserved areas,
so reserved[0] is renamed to ->flags. The struct, thus, now
has six reserved 4-byte regions.
= REQBUFS
We use one byte of a 4 byte ->reserved[1] member of struct
v4l2_requestbuffers. The struct, thus, now has reserved 3 bytes.
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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By setting or clearing the V4L2_MEMORY_FLAG_NON_COHERENT flag
user-space should be able to hint vb2 that either non-coherent
(if supported) or coherent memory should be used for the buffer
allocation.
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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The uvc driver relies on the camera firmware to keep the control states
and therefore is not capable of changing an inactive control.
Allow returning -EACCES in those cases.
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Add documentation for the V4L2_CID_NOTIFY_GAINS control.
This control is required by sensors that need to know what colour
gains will be applied to pixels by downstream processing (such as by
an ISP), though the sensor does not apply these gains itself.
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Add Mediatek's non-compressed 8 bit block video mode. This format is
produced by the MT8183 codec and can be converted to a non-proprietary
format by the MDP3 component.
Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Add more information about V4L2_PIX_FMT_NV12MT and
V4L2_PIX_FMT_NV12M_16X16, so it's clearer for driver authors and users.
Also, group the two pixel formats with the other tiled formats,
for clarity.
Unlike the recently introduced tiled formats (V4L2_PIX_FMT_NV12_4L4, etc)
these formats have remained Samsung-specific until now. Therefore, and
although the NV12MT and NV12MT_16X16 nomenclatures are less clear, we are
keeping them as-is.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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This format is produced by VeriSilicon Hantro G2 and VC8000D cores.
It is a simple 4x4 tiling layout in a linear way.
The pixel format was introduced by GStreamer using FourCC VT12,
so let's stick to it.
Link: https://gstreamer.freedesktop.org/documentation/video/video-format.html
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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The V4L2_PIX_FMT_HM12 format is actually a simple NV12 tiled format,
with 16x16 linear tiles. Rename the format and move its documentation
together with the other tiled NV12 formats.
Keep V4L2_PIX_FMT_HM12 for application compatibility.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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The V4L2_PIX_FMT_SUNXI_TILED_NV12 format is actually a fairly
common NV12 tiled format, with 32x32 linear tiles. Rename the format
and move its documentation together with the other tiled NV12 formats.
Keep V4L2_PIX_FMT_SUNXI_TILED_NV12 for application compatibility.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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HEVC scaling lists are used for the scaling process for transform
coefficients.
V4L2_HEVC_SPS_FLAG_SCALING_LIST_ENABLED has to set when they are
encoded in the bitstream.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Reviewed-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Thomas Gleixner:
- Move futex code into kernel/futex/ and split up the kitchen sink into
seperate files to make integration of sys_futex_waitv() simpler.
- Add a new sys_futex_waitv() syscall which allows to wait on multiple
futexes.
The main use case is emulating Windows' WaitForMultipleObjects which
allows Wine to improve the performance of Windows Games. Also native
Linux games can benefit from this interface as this is a common wait
pattern for this kind of applications.
- Add context to ww_mutex_trylock() to provide a path for i915 to
rework their eviction code step by step without making lockdep upset
until the final steps of rework are completed. It's also useful for
regulator and TTM to avoid dropping locks in the non contended path.
- Lockdep and might_sleep() cleanups and improvements
- A few improvements for the RT substitutions.
- The usual small improvements and cleanups.
* tag 'locking-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits)
locking: Remove spin_lock_flags() etc
locking/rwsem: Fix comments about reader optimistic lock stealing conditions
locking: Remove rcu_read_{,un}lock() for preempt_{dis,en}able()
locking/rwsem: Disable preemption for spinning region
docs: futex: Fix kernel-doc references
futex: Fix PREEMPT_RT build
futex2: Documentation: Document sys_futex_waitv() uAPI
selftests: futex: Test sys_futex_waitv() wouldblock
selftests: futex: Test sys_futex_waitv() timeout
selftests: futex: Add sys_futex_waitv() test
futex,arm: Wire up sys_futex_waitv()
futex,x86: Wire up sys_futex_waitv()
futex: Implement sys_futex_waitv()
futex: Simplify double_lock_hb()
futex: Split out wait/wake
futex: Split out requeue
futex: Rename mark_wake_futex()
futex: Rename: match_futex()
futex: Rename: hb_waiter_{inc,dec,pending}()
futex: Split out PI futex
...
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Create userspace documentation for futex_waitv() syscall, detailing how
the arguments are used.
Signed-off-by: André Almeida <andrealmeid@collabora.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210923171111.300673-23-andrealmeid@collabora.com
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Pull CDROM updates from Jens Axboe:
"On behalf of Phillip, here are the CDROM updates for the 5.16-rc1
merge window:
- Add ioctl for improved media change detection (Lukas)
- Reformat some documentation (Phillip)
- Redundant variable removal (luo)"
* tag 'for-5.16/cdrom-2021-10-29' of git://git.kernel.dk/linux-block:
cdrom: Remove redundant variable and its assignment
cdrom: docs: reformat table in Documentation/userspace-api/ioctl/cdrom.rst
drivers/cdrom: improved ioctl for media change detection
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Add extra space to the first column of ioctl values table, and also realign
the text in the second column, to fix a documentation build warning
introduced by: commit 67f1e027c270 ("drivers/cdrom: improved ioctl for
media change detection")
Suggested-by: Randy Dunlap <rdunlap@infradead.org>
Fixes: 67f1e027c270 ("drivers/cdrom: improved ioctl for media change detection")
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20211007231720.31997-1-phil@philpotter.co.uk
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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The current implementation of the CDROM_MEDIA_CHANGED ioctl relies on
global state, meaning that only one process can detect a disc change
while the ioctl call will return 0 for other calling processes afterwards
(see bug 213267).
This introduces a new cdrom ioctl, CDROM_TIMED_MEDIA_CHANGE, that
works by maintaining a timestamp of the last detected disc change instead
of a boolean flag: Processes calling this ioctl command can provide
a timestamp of the last disc change known to them and receive
an indication whether the disc was changed since then and the updated
timestamp.
I considered fixing the buggy behavior in the original
CDROM_MEDIA_CHANGED ioctl but that would require maintaining state
for each calling process in the kernel, which seems like a worse
solution than introducing this new ioctl.
Signed-off-by: Lukas Prediger <lumip@lumip.de>
Link: https://lore.kernel.org/all/20210912191207.74449-1-lumip@lumip.de
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210913230942.1188-1-phil@philpotter.co.uk
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Add PTP_CLK_MAGIC to the userspace-api/ioctl/ioctl-number.rst
documentation file.
Fixes: d94ba80ebbea ("ptp: Added a brand new class driver for ptp clocks.")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20211024163831.10200-1-rdunlap@infradead.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Fix a VDUSE documentation build warning:
Documentation/userspace-api/vduse.rst:21: WARNING: Title underline too short.
Fixes: 7bc7f61897b6 ("Documentation: Add documentation for VDUSE")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Xie Yongji <xieyongji@bytedance.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: virtualization@lists.linux-foundation.org
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Link: https://lore.kernel.org/r/20211006202904.30241-1-rdunlap@infradead.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Xie Yongji <xieyongji@bytedance.com>
Acked-by: Jason Wang <jasowang@redhat.com>
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Pull virtio updates from Michael Tsirkin:
- vduse driver ("vDPA Device in Userspace") supporting emulated virtio
block devices
- virtio-vsock support for end of record with SEQPACKET
- vdpa: mac and mq support for ifcvf and mlx5
- vdpa: management netlink for ifcvf
- virtio-i2c, gpio dt bindings
- misc fixes and cleanups
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (39 commits)
Documentation: Add documentation for VDUSE
vduse: Introduce VDUSE - vDPA Device in Userspace
vduse: Implement an MMU-based software IOTLB
vdpa: Support transferring virtual addressing during DMA mapping
vdpa: factor out vhost_vdpa_pa_map() and vhost_vdpa_pa_unmap()
vdpa: Add an opaque pointer for vdpa_config_ops.dma_map()
vhost-iotlb: Add an opaque pointer for vhost IOTLB
vhost-vdpa: Handle the failure of vdpa_reset()
vdpa: Add reset callback in vdpa_config_ops
vdpa: Fix some coding style issues
file: Export receive_fd() to modules
eventfd: Export eventfd_wake_count to modules
iova: Export alloc_iova_fast() and free_iova_fast()
virtio-blk: remove unneeded "likely" statements
virtio-balloon: Use virtio_find_vqs() helper
vdpa: Make use of PFN_PHYS/PFN_UP/PFN_DOWN helper macro
vsock_test: update message bounds test for MSG_EOR
af_vsock: rename variables in receive loop
virtio/vsock: support MSG_EOR bit processing
vhost/vsock: support MSG_EOR bit processing
...
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VDUSE (vDPA Device in Userspace) is a framework to support
implementing software-emulated vDPA devices in userspace. This
document is intended to clarify the VDUSE design and usage.
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20210831103634.33-14-xieyongji@bytedance.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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This VDUSE driver enables implementing software-emulated vDPA
devices in userspace. The vDPA device is created by
ioctl(VDUSE_CREATE_DEV) on /dev/vduse/control. Then a char device
interface (/dev/vduse/$NAME) is exported to userspace for device
emulation.
In order to make the device emulation more secure, the device's
control path is handled in kernel. A message mechnism is introduced
to forward some dataplane related control messages to userspace.
And in the data path, the DMA buffer will be mapped into userspace
address space through different ways depending on the vDPA bus to
which the vDPA device is attached. In virtio-vdpa case, the MMU-based
software IOTLB is used to achieve that. And in vhost-vdpa case, the
DMA buffer is reside in a userspace memory region which can be shared
to the VDUSE userspace processs via transferring the shmfd.
For more details on VDUSE design and usage, please see the follow-on
Documentation commit.
NB(mst): when merging this with
b542e383d8c0 ("eventfd: Make signal recursion protection a task bit")
replace eventfd_signal_count with eventfd_signal_allowed,
and drop the previous
("eventfd: Export eventfd_wake_count to modules").
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20210831103634.33-13-xieyongji@bytedance.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- new sensor drivers: imx335, imx412, ov9282
- new IR transmitter driver: meson-ir-tx
- handro driver gained support for H.264 for Rockchip VDPU2
- imx gained support for i.MX8MQ
- ti-vpe has gained support for other SoC variants
- lots of cleanups, fixes, board additions and doc improvements
* tag 'media/v5.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (195 commits)
media: venus: venc: add support for V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM control
media: venus: venc: Add support for intra-refresh period
media: v4l2-ctrls: Add intra-refresh period control
media: docs: ext-ctrls-codec: Document cyclic intra-refresh zero control value
media: venus: helper: do not set constrained parameters for UBWC
media: venus: venc: Fix potential null pointer dereference on pointer fmt
media: venus: hfi: fix return value check in sys_get_prop_image_version()
media: tegra-cec: Handle errors of clk_prepare_enable()
media: cec-pin: rename timer overrun variables
media: TDA1997x: report -ENOLINK after disconnecting HDMI source
media: TDA1997x: fix tda1997x_query_dv_timings() return value
media: Fix cosmetic error in TDA1997x driver
media: v4l2-dv-timings.c: fix wrong condition in two for-loops
media: imx: add a driver for i.MX8MQ mipi csi rx phy and controller
media: dt-bindings: media: document the nxp,imx8mq-mipi-csi2 receiver phy and controller
media: imx: imx7_mipi_csis: convert some switch cases to the default
media: imx: imx7-media-csi: Fix buffer return upon stream start failure
media: imx: imx7-media-csi: Don't set PIXEL_BIT in CSICR1
media: imx: imx7-media-csi: Set TWO_8BIT_SENSOR for >= 10-bit formats
media: dt-bindings: media: nxp,imx7-csi: Add i.MX8MM support
...
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Add a control to set intra-refresh period.
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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In all drivers _CYCLIC_INTRA_REFRESH_MB default control value is zero
which means that the macroblocks will not be intra-refreshed. Document
this _CYCLIC_INTRA_REFRESH_MB control behaviour in control description.
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Improve the documentation of the frame rate configuration so that it can
be understood by a regular human being.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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The V4L2_CID_PIXEL_RATE is nowadays used to tell pixel sampling rate in
the sub-device's pixel array, not the pixel rate over a link (for which it
also becomes unfit with the addition of multiplexed streams later on). Fix
this.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Andrey Konovalov <andrey.konovalov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Fix kerneldoc syntax in v4l2-async. The references were not produced
correctly.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Modernise the documentation to make it more precise and update the use of
pixel rate control and various other changes. In particular:
- Use non-proportional font for file names, properties as well as
controls.
- The unit of the HBLANK control is pixels, not lines.
- The unit of PIXEL_RATE control is pixels per second, not Hz.
- Merge common requirements for CSI-2 and parallel busses.
- Include all DT properties needed for assigned clocks.
- Fix referencing the link rate control.
- SMIA driver's new name is CCS driver.
- The PIXEL_RATE control denotes pixel rate on the pixel array on camera
sensors. Do not suggest it is used to tell the maximum pixel rate on the
bus anymore.
- Improve ReST syntax (plain struct and function names).
- Remove the suggestion to use s_power() in receiver drivers.
- Make MIPI website URL use HTTPS, add Wikipedia links to BT.601 and
BT.656.
Fixes: e4cf8c58af75 ("media: Documentation: media: Document how to write camera sensor drivers")
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Andrey Konovalov <andrey.konovalov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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If HEVC frame consists of multiple slices, segment address has to be
known in order to properly decode it.
Add segment address field to slice parameters.
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Fix typo in a define: CEC_OP_REC_SEQ_SATERDAY -> CEC_OP_REC_SEQ_SATURDAY
This isn't used yet in actual applications to the best of my knowledge,
and it certainly doesn't break the ABI since the value doesn't change.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Pull block driver updates from Jens Axboe:
"Sitting on top of the core block changes, here are the driver changes
for the 5.15 merge window:
- NVMe updates via Christoph:
- suspend improvements for devices with an HMB (Keith Busch)
- handle double completions more gacefull (Sagi Grimberg)
- cleanup the selects for the nvme core code a bit (Sagi Grimberg)
- don't update queue count when failing to set io queues (Ruozhu Li)
- various nvmet connect fixes (Amit Engel)
- cleanup lightnvm leftovers (Keith Busch, me)
- small cleanups (Colin Ian King, Hou Pu)
- add tracing for the Set Features command (Hou Pu)
- CMB sysfs cleanups (Keith Busch)
- add a mutex_destroy call (Keith Busch)
- remove lightnvm subsystem. It's served its purpose and ultimately
led to zoned nvme support, we no longer need it (Christoph)
- revert floppy O_NDELAY fix (Denis)
- nbd fixes (Hou, Pavel, Baokun)
- nbd locking fixes (Tetsuo)
- nbd device removal fixes (Christoph)
- raid10 rcu warning fix (Xiao)
- raid1 write behind fix (Guoqing)
- rnbd fixes (Gioh, Md Haris)
- misc fixes (Colin)"
* tag 'for-5.15/drivers-2021-08-30' of git://git.kernel.dk/linux-block: (42 commits)
Revert "floppy: reintroduce O_NDELAY fix"
raid1: ensure write behind bio has less than BIO_MAX_VECS sectors
md/raid10: Remove unnecessary rcu_dereference in raid10_handle_discard
nbd: remove nbd->destroy_complete
nbd: only return usable devices from nbd_find_unused
nbd: set nbd->index before releasing nbd_index_mutex
nbd: prevent IDR lookups from finding partially initialized devices
nbd: reset NBD to NULL when restarting in nbd_genl_connect
nbd: add missing locking to the nbd_dev_add error path
nvme: remove the unused NVME_NS_* enum
nvme: remove nvm_ndev from ns
nvme: Have NVME_FABRICS select NVME_CORE instead of transport drivers
block: nbd: add sanity check for first_minor
nvmet: check that host sqsize does not exceed ctrl MQES
nvmet: avoid duplicate qid in connect cmd
nvmet: pass back cntlid on successful completion
nvme-rdma: don't update queue count when failing to set io queues
nvme-tcp: don't update queue count when failing to set io queues
nvme-tcp: pair send_mutex init with destroy
nvme: allow user toggling hmb usage
...
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Lightnvm supports the OCSSD 1.x and 2.0 specs which were early attempts
to produce Open Channel SSDs and never made it into the NVMe spec
proper. They have since been superceeded by NVMe enhancements such
as ZNS support. Remove the support per the deprecation schedule.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210812132308.38486-1-hch@lst.de
Reviewed-by: Matias Bjørling <mb@lightnvm.io>
Reviewed-by: Javier González <javier@javigon.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cache flush updates from Thomas Gleixner:
"A reworked version of the opt-in L1D flush mechanism.
This is a stop gap for potential future speculation related hardware
vulnerabilities and a mechanism for truly security paranoid
applications.
It allows a task to request that the L1D cache is flushed when the
kernel switches to a different mm. This can be requested via prctl().
Changes vs the previous versions:
- Get rid of the software flush fallback
- Make the handling consistent with other mitigations
- Kill the task when it ends up on a SMT enabled core which defeats
the purpose of L1D flushing obviously"
* tag 'x86-cpu-2021-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Documentation: Add L1D flushing Documentation
x86, prctl: Hook L1D flushing in via prctl
x86/mm: Prepare for opt-in based L1D flush in switch_mm()
x86/process: Make room for TIF_SPEC_L1D_FLUSH
sched: Add task_work callback for paranoid L1D flush
x86/mm: Refactor cond_ibpb() to support other use cases
x86/smp: Add a per-cpu view of SMT state
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Add documentation of l1d flushing, explain the need for the
feature and how it can be used.
Signed-off-by: Balbir Singh <sblbir@amazon.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210108121056.21940-6-sblbir@amazon.com
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull seccomp fixes from Kees Cook:
- Fix typo in user notification documentation (Rodrigo Campos)
- Fix userspace counter report when using TSYNC (Hsuan-Chi Kuo, Wiktor
Garbacz)
* tag 'seccomp-v5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
seccomp: Fix setting loaded filter count during TSYNC
Documentation: seccomp: Fix typo in user notification
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The close on exec flag is O_CLOEXEC, not O_EXEC. This patch just fixes
the typo.
Suggested-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Rodrigo Campos <rodrigo@kinvolk.io>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Fixes: 0ae71c7720e3 ("seccomp: Support atomic "addfd + send reply"")
Link: https://lore.kernel.org/r/20210702151927.263402-1-rodrigo@kinvolk.io
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char / misc driver updates from Greg KH:
"Here is the big set of char / misc and other driver subsystem updates
for 5.14-rc1. Included in here are:
- habanalabs driver updates
- fsl-mc driver updates
- comedi driver updates
- fpga driver updates
- extcon driver updates
- interconnect driver updates
- mei driver updates
- nvmem driver updates
- phy driver updates
- pnp driver updates
- soundwire driver updates
- lots of other tiny driver updates for char and misc drivers
This is looking more and more like the "various driver subsystems
mushed together" tree...
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (292 commits)
mcb: Use DEFINE_RES_MEM() helper macro and fix the end address
PNP: moved EXPORT_SYMBOL so that it immediately followed its function/variable
bus: mhi: pci-generic: Add missing 'pci_disable_pcie_error_reporting()' calls
bus: mhi: Wait for M2 state during system resume
bus: mhi: core: Fix power down latency
intel_th: Wait until port is in reset before programming it
intel_th: msu: Make contiguous buffers uncached
intel_th: Remove an unused exit point from intel_th_remove()
stm class: Spelling fix
nitro_enclaves: Set Bus Master for the NE PCI device
misc: ibmasm: Modify matricies to matrices
misc: vmw_vmci: return the correct errno code
siox: Simplify error handling via dev_err_probe()
fpga: machxo2-spi: Address warning about unused variable
lkdtm/heap: Add init_on_alloc tests
selftests/lkdtm: Enable various testable CONFIGs
lkdtm: Add CONFIG hints in errors where possible
lkdtm: Enable DOUBLE_FAULT on all architectures
lkdtm/heap: Add vmalloc linear overflow test
lkdtm/bugs: XFAIL UNALIGNED_LOAD_STORE_WRITE
...
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